Question about Onkyo TX-SR806 Receiver

4 Answers

When the receiver is turned on for the first time on any given day very loud crackling occurs for several moments after a while the noise goes away and the unit then functions normally. I have a cable box and a Blu Ray player and an HD Dvd machine all of which use HDMI and all work as they are supposed to after the initial noise on start up. I know that left alone this will eventually be a serious problem, any help would be appreciated

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  • debarney Sep 04, 2010

    Thanks for your reply
    I have changed a couple of HDMI cables already (an expensive undertaking) with no luck as yet.
    If the amp has been down for 3 - 5 hours it seems to be normal but overnight 7 - 8 hours causes a problem, weird.
    This also makes troubleshooting difficult.

  • debarney Sep 08, 2010

    My work has taken priority for the next few days
    Thanks for your inquiry will give you details as things evolve

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4 Answers

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  • Onkyo Master
  • 6,993 Answers

Hello,

how long have you been using this receiver? I believe this receiver is due for servicing.

To service the receiver, get a disconnect other peripherals (DVD, cable box, etc), get a screw driver, and use it to open the receiver cover so that you gain gain access to the receiver's panel board. The panel board should have been dusty, if this is your first time of opening it.

Get a small paint brush, use it to clean off every dust on the panel. Then get some fuel, dip the paint brush into the fuel and also use it to clean the board.

Allow, the board to dry very well, cover the receiver and put it on again. By now, there should be difference.

Lastly, you might need to disconnect, all the wires on the board so that you can clean it deeply/properly. But make sure you connect the wires back to their correct position.

Good luck.

Posted on Sep 08, 2010

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  • Master
  • 5,807 Answers

Hi,

You are right about that.

Preventive Maintenance is cheaper than repair.


Talking about Preventive Maintenance,

One has to checked if the sound are heard on all

speakers with the same level.


If one channel only , look for the terminal at the

back of the receiver where it is connected and

we will troubleshoot on that channel.



if the sound is heard on all speaker same level on all

then , what you may need to do is removed all

the Input connected ( but have a note on it ).

And turn the unit ON without anything connected on all

the Inputs to identify the cause

( but speakers are all connected ).


and post what you found.


These may take some time , But i am in no hurry

while I await for your reply.

Posted on Sep 04, 2010

  • 1 more comment 
  • Rommel Cana
    Rommel Cana Sep 04, 2010



    it might take another night to determine, do not connect

    anything on the inputs,


    if problem still arise , we will start troubleshooting on your

    receiver,

    you did not post , is it on all speakers?

    or just one?, or is it coming from the unit?


    still waiting for your answer

  • Rommel Cana
    Rommel Cana Sep 04, 2010



    it might take another night to determine, do not connect

    anything on the inputs,


    if problem still arise , we will start troubleshooting on your

    receiver,

    you did not post , is it on all speakers?

    or just one?, or is it coming from the unit?


    still waiting for your answer

  • Rommel Cana
    Rommel Cana Sep 11, 2010



    can you try connecting with the basic , like the RCA connector

    like these :





    just for troubleshooting only, so we can determine if problem still persist?

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  • Master
  • 1,472 Answers

Debarney

You are correct this is something that you want to address ASAP because you do not want to damage your receiver and/or other devices.

So most likely the noise is being caused by on of your devices grounding through the receiver inducing an audio siginal that you can hear.

Since the noise goes away the receiver built in filter is hiding the sound so you do not hear it.

To make sure that there is not a problem with the unit unplug all connections from the receiver except your speaker. This includes all HDMI connection too. So the only thing you should have connected is your speakers and the AC connection.

Now power cycle the reciever if you still have the sound then the problem is with the receiver. If not start reconnecting your devices on at a time and power cycling the unit to see if you get the sound back. This will be the device that is the problem.

Note the problem may be with a cable that you are using to connect the device. I have ran in to several cases where the HDMI cable was bad and this causes the problem.

Let me know how things go

Issken
http://www.fixya.com/users/issken

Posted on Sep 04, 2010

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  • Expert
  • 2,973 Answers

This kind of crackling occurs due to dust getting accumulated in the knobs. Pleas use the vacuum cleaner to blow into the knobs and remove this fine dust.

Posted on Sep 09, 2010

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